Monitoring the threshold voltage of frequently read cells
US7193901B2 · kind B2 · utility
81Cited by
2References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2005 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Apr 21, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/3427
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A canary cell may be used in a semiconductor memory to indicate an incipient failure. For example, the canary cell may be provided on rows in a flash memory. Before a read disturb occurs, the canary cell may first sense the condition, for example, because it may be biased with a higher drain bias and is, therefore, more susceptible to the read disturb problem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.